<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item in hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div
        class="area"
        v-for="(item,key) of cities"
        :key="key"
        :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
            @click="handleCityClick(innerItem.name)"
          >
            {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import {mapGetters, mapActions} from 'vuex';
  import Bscroll from 'better-scroll'

  export default {
    name: "CityList",
    props: {
      hot: {
        type: Array,
      },
      cities: {
        type: Object
      },
      letter: {
        type: String
      }
    },
    computed: {
      ...mapGetters([
        'city'
      ])
    },
    mounted() {
      this.scroll = new Bscroll(this.$refs.wrapper);
    },
    methods: {
      ...mapActions({
        setCity: 'changeCity'
      }),
      handleCityClick (city) {
        this.setCity(city);
        this.$router.push('/')
      }
    },
    watch: {
      letter( ) {
        // console.log(this.letter);
        if (this.letter) {
          const element = this.$refs[this.letter][0];
          // console.log(element)
          this.scroll.scrollToElement(element, 2000);
        }
      }
    }
  }
</script>

<style scoped lang="stylus">
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc

  .border-bottom
    &:before
      border-color #ccc

  .list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    .title
      line-height .54rem
      background #eee
      padding-left .2rem
      color #666
      font-size .26rem
    .button-list
      padding .1rem
      overflow hidden
      padding .1rem .6rem .1rem .1rem
      .button-wrapper
        width 33.33%
        float left
        .button
          text-align center
          padding .1rem 0
          border-radius .06rem
          margin .1rem
          border .02rem solid #ccc
    .item-list
      .item
        line-height .76rem
        padding-left .2rem
</style>
